26 April 2012
Assessing Officer is by location of the Assessee; If you have shifted to Haldwani, file next return with new address with permanent PAN; You may inform your last AO about your moving to other State
01 May 2012
Go to NSDL site and change the address on PAN Card first. Thereafter you apply to the assessing officer for transfer of your assessment records to the new A.O. having jurisdiction over your case. Copy of the letter must be send to the present CIT and would be CIT with supporting evidence of address proof. The jurisdiction will be changed.